专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明申请

WO2008052580A1 MANAGEMENT OF SEAMLESS HANDOVER BETWEEN DIFFERENT COMMUNICATION SYSTEMS IN AN IP DUAL-MODE TERMINAL 审中-公开
标题翻译： IP双向终端不同通信系统之间的无缝切换管理
公开(公告)号：WO2008052580A1
公开(公告)日：2008-05-08
申请号：PCT/EP2006/010468
申请日：2006-10-31
申请人： TELECOM ITALIA S.P.A. , FANTINI, Roberto , CAZZATELLO, Gaetano, Francesco , RUSCITTO, Alfredo
发明人： FANTINI, Roberto , CAZZATELLO, Gaetano, Francesco , RUSCITTO, Alfredo
IPC分类号： H04L29/06 , H04Q7/32 , H04Q7/38
CPC分类号： H04L29/12028 , H04L61/103 , H04L69/16 , H04L69/161 , H04W8/26 , H04W36/0033 , H04W36/14 , H04W80/04 , H04W88/06
摘要： Disclosed herein is a dual-mode terminal (T1) designed to connect to an IP-based network (IPN) via a first communication system (UMTS) and a second communication system (WLAN), the dual-mode terminal (T1 ) comprising a first physical network interface module (N11) adapted to establish a packet-based communication with the IP-based network (IPN) via the first communication system (UMTS), the first physical network interface module (N11) being accessible via a first physical network interface (ph11 ) having a first physical network address (IP1_P1 ); a second physical network interface module (N11 ) adapted to establish a packet-based communication with the IP-based network via the second communication system (WLAN), the second physical network interface module (N 12) being accessible via a second physical network interface (ph12) having a second physical network address (IP1_P2); an IP-based protocol stack (TCP/IP) adapted to operate between a software application (A2) in the dual-mode terminal (T1) and the first and second physical network interface modules (N 11, N 12); and a system for performing a seamless handover between the first communication system (UMTS) and the second communication system (WLAN) during a connection to the IP-based network; wherein the system for performing a seamless handover comprises a virtual network physical network interface module (M 1 ) accessible via a virtual network interface (virt11) having a virtual network address (IP1 V1), the virtual network physical network interface module (M1) being configured to operate between the IP-based protocol stack (TCP/IP) and the first and second physical network interface modules (N11, N 12) to receive and transmit incoming and outgoing data packets through the first and the second physical network interfaces (ph11, ph12); the IP-based protocol stack (TCP/IP) being configured to generate data packets having a source physical network address equal to the virtual network address (IP1_V1) of the virtual network interface (virt11) in the dual-mode terminal (T1 ); and the virtual network physical network interface module (M 1) being configured to change the source physical network address of data packets from the IP-based protocol stack (IPS1 ) to the physical network address (IP1_P1, IP1_P2) of the physical network interface (ph11, ph12) of the physical network interface module (N11, N12) in the dual-mode terminal (T1 ) used for the connection to the IP-based network.
摘要翻译：本文公开了一种被设计为经由第一通信系统（UMTS）和第二通信系统（WLAN）连接到基于IP的网络（IPN）的双模终端（T1），所述双模终端（T1）包括第一物理网络接口模块（N11），其适于经由所述第一通信系统（UMTS）与所述基于IP的网络（IPN）建立基于分组的通信，所述第一物理网络接口模块（N11）可经由第一物理网络接口（ph11）具有第一物理网络地址（IP1_P1）; 适于经由所述第二通信系统（WLAN）与所述基于IP的网络建立基于分组的通信的第二物理网络接口模块（N11），所述第二物理网络接口模块（N12）可经由第二物理网络接口（ph12）具有第二物理网络地址（IP1_P2）; 适于在双模终端（T1）中的软件应用程序（A2）与第一和第二物理网络接口模块（N11，N12）之间操作的基于IP的协议栈（TCP / IP）; 以及在与所述基于IP的网络的连接期间在所述第一通信系统（UMTS）和所述第二通信系统（WLAN）之间执行无缝切换的系统; 其特征在于，所述用于执行无缝切换的系统包括经由具有虚拟网络地址（IP1 V1）的虚拟网络接口（virt11））可访问的虚拟网络物理网络接口模块（M 1），所述虚拟网络物理网络接口模块被配置为在基于IP的协议栈（TCP / IP）和第一和第二物理网络接口模块（N11，N12）之间操作，以通过第一和第二物理网络接口（ph11）接收和发送输入和输出数据分组，ph12）; 所述基于IP的协议栈（TCP / IP）被配置为生成具有等于所述双模终端（T1）中的虚拟网络接口（virt11）的虚拟网络地址（IP1_V1）的源物理网络地址的数据分组; 虚拟网络物理网络接口模块（M 1）被配置为将数据分组的源物理网络地址从基于IP的协议栈（IPS1）改变为物理网络接口的物理网络地址（IP1_P1，IP1_P2）用于连接到基于IP的网络的双模终端（T1）中的物理网络接口模块（N11，N12）的ph11，ph12，ph12）。

2. 发明申请

WO2009084051A1 MANAGEMENT OF A HYBRID COMMUNICATION NETWORK COMPRISING A CELLULAR NETWORK AND A LOCAL NETWORK 审中-公开
标题翻译：包含细胞网络和本地网络的混合通信网络的管理
公开(公告)号：WO2009084051A1
公开(公告)日：2009-07-09
申请号：PCT/IT2007/000928
申请日：2007-12-28
申请人： TELECOM ITALIA S.P.A. , FANTINI, Roberto , GALLO, Paolo , RUSCITTO, Alfredo
发明人： FANTINI, Roberto , GALLO, Paolo , RUSCITTO, Alfredo
IPC分类号： H04Q7/38 , H04Q7/32
CPC分类号： H04W48/18 , H04L5/006 , H04L67/32 , H04W28/0236 , H04W28/18 , H04W40/08 , H04W40/12 , H04W72/1226
摘要： Disclosed herein is a method of managing a hybrid network comprising a cellular network (3) and a local network (4) wherein a number of dual mode mobile terminals (7) are connectable to a base.station (10) of the cellular network (3) through a direct cellular link and are also connectable, one with respect to the other, through the local network (4) by means of a radio access technique. The method comprises the steps of computing a cost associated with a direct connection established along a path (A) extending from a selected mobile terminal to the base station (10) trough the cellular link only; computing a cost (C cg ) associated with at least one indirect connection established along a path (B) extending from said selected mobile terminal to said base station (10) trough the local network (4) and the cellular network (3) and selecting for data transmission the path that minimizes the cost.
摘要翻译：本文公开了一种管理包括蜂窝网络（3）和本地网络（4）的混合网络的方法，其中多个双模移动终端（7）可连接到蜂窝网络的基站（10）（10） 3）通过直接蜂窝链路，并且也可以通过无线电接入技术通过本地网络（4）彼此连接。该方法包括以下步骤：仅通过蜂窝链路来计算沿着从所选移动终端延伸到基站（10）的路径（A）建立的直接连接的成本; 计算与通过本地网络（4）和蜂窝网络（3）从所述选择的移动终端延伸到所述基站（10）的路径（B）建立的至少一个间接连接相关联的成本（Ccg），并且选择数据传输最小化成本的路径。

3. 发明申请

WO2010075864A1 A METHOD FOR DISTRIBUTED MOBILE COMMUNICATIONS, CORRESPONDING SYSTEM AND COMPUTER PROGRAM PRODUCT 审中-公开
标题翻译：分布式移动通信方法，相关系统和计算机程序产品
公开(公告)号：WO2010075864A1
公开(公告)日：2010-07-08
申请号：PCT/EP2008/011138
申请日：2008-12-30
申请人： TELECOM ITALIA S.p.A , BOLDI, Mauro , GIANOLA, Paolo , MELIS, Bruno , RUSCITTO, Alfredo
发明人： BOLDI, Mauro , GIANOLA, Paolo , MELIS, Bruno , RUSCITTO, Alfredo
IPC分类号： H04B7/02 , H04W88/08
CPC分类号： H04B7/022 , H04B7/0617 , H04W4/18 , H04W88/08 , H04W92/10
摘要： A method of arranging exchange of signals between user terminals (U 1 , U 2 ,...U N ) in a cellular communication system and at least one base station. The base station includes a central unit (CU OFDM ) and a plurality of remote units (RU OFDM ). The signals are exchanged (14-18) between the central unit (CU OFDM ) and the remote units (RU OFDM ) as aggregated signals for plural user terminals. The signals are processed (150) at the remote units (RU OFDM ) as distinct signals each associated to a respective one of the plural user terminals (U 1 , U 2 ,...U N ).
摘要翻译：一种在蜂窝通信系统和至少一个基站中在用户终端（U1，U2，... UN）之间设置信号交换的方法。基站包括中央单元（CUOFDM）和多个远程单元（RUOFDM）。在中央单元（CUOFDM）和远程单元（RUOFDM）之间交换信号（14-18）作为多个用户终端的聚合信号。信号在远程单元（RUOFDM）处理（150）作为与多个用户终端（U1，U2，... UN）中的相应一个相关联的不同信号。

4. 发明申请

WO2008064705A1 A DELAY ELEMENT AND A CORRESPONDING METHOD 审中-公开
标题翻译：延迟元素和相应的方法
公开(公告)号：WO2008064705A1
公开(公告)日：2008-06-05
申请号：PCT/EP2006/011498
申请日：2006-11-30
申请人： PIRELLI & C. S.P.A. , TELECOM ITALIA S.P.A. , GRASSANO, Giuseppe , BOFFA, Vincenzo , GATTI, Fabrizio , RISI, Luca , RUSCITTO, Alfredo , SEMENZATO, Paolo
发明人： GRASSANO, Giuseppe , BOFFA, Vincenzo , GATTI, Fabrizio , RISI, Luca , RUSCITTO, Alfredo , SEMENZATO, Paolo
IPC分类号： H01P5/18 , H01P9/00
CPC分类号： H01P5/184 , H01P9/00
摘要： A differential delay element (10) for use e.g. in selectively delaying RF signals in telecommunication systems includes a first microstrip circuit (12) and a second microstrip circuit (14) arranged side-by-side in a facing relationship. The first microstrip circuit (12) defines a first delayed travel path for a first signal from a first input port (IN1 ) to a first output port (OUT1 ) and the second microstrip circuit (14) defines a second delayed travel path for a second signal from a second input port (IN2) to a second output port (OUT2). A perturber (18) is arranged between the first (12) and second (14) microstrip circuits, displaceable (20) towards and away from the first (12) and second (14) microstrip circuits, so that when the distance of the perturber (18) to one (12 resp. 14) of the microstrip circuits increases, the distance of the perturber (18) to the other (14 resp. 12) of the microstrip circuits decreases and viceversa. The position of the perturber (18) between the first (12) and second (14) microstrip circuits defines the differential delay, namely the difference (Δτ=τ1-τ2) between the times (τ1, τ2) experienced by the two signals in travelling their travel paths through the delay device (10).
摘要翻译：一种差分延迟元件（10），用于例如在电信系统中选择性地延迟RF信号包括以面对关系并排布置的第一微带电路（12）和第二微带电路（14）。第一微带电路（12）限定用于从第一输入端口（IN1）到第一输出端口（OUT1）的第一信号的第一延迟行进路径，并且第二微带电路（14）限定第二延迟行进路径用于第二输入端口信号从第二输入端口（IN2）传输到第二输出端口（OUT2）。在第一（12）和第二（14）微带电路之间布置有一个扰流器（18），朝向和远离第一（12）和第二（14）微带电路可移位（20），使得当扰流器（18）到微带电路之一（12或14）增加，微带电路的静音（18）到另一个（14或12）的距离减小，反之亦然。第一（12）和第二（14）微带电路之间的谐振器（18）的位置定义差分延迟，即由两个信号经历的时间（t1，t2）之间的差值（Δt= t1-t2）在通过延迟装置（10）行进其行进路径时。

5. 发明申请

WO2004047327A1 EARLY-LATE SYNCHRONIZER HAVING REDUCED TIMING JITTER 审中-公开
标题翻译：具有减少时序抖动的早期同步器
公开(公告)号：WO2004047327A1
公开(公告)日：2004-06-03
申请号：PCT/EP2002/012814
申请日：2002-11-15
申请人： TELECOM ITALIA S.P.A. , STMICROELECTRONICS S.R.L. , ETTORRE, Donato , GRAZIANO, Maurizio , MELIS, Bruno , FINOTELLO, Andrea , RUSCITTO, Alfredo
发明人： ETTORRE, Donato , GRAZIANO, Maurizio , MELIS, Bruno , FINOTELLO, Andrea , RUSCITTO, Alfredo
IPC分类号： H04B1/707
CPC分类号： H04B1/7085 , H04B1/709
摘要： A device for maintaining fine alignment between an incoming spread spectrum signal and a locally generated code in a digital communication receiver comprises: - a delay line (56) for storing a plurality of consecutive samples (E-1, E, M, L, L+1) of the incoming spread spectrum signal; - three digitally controlled interpolators (24, 26, 28) for determining by interpolation between consecutive samples an interpolated early sample (e), an interpolated middle sample (m) and an interpolated late sample (1); - two correlators (30, 32) for calculating an error signal (ξ) as the difference between the energy of the symbols computed from the interpolated early (e) and late (1) samples; - a circuit for generating a control signal (S¿OUT?) for controlling the interpolation phase of the digitally controlled interpolator (24) for the early sample (e), and - a digital non-linear filter (68), for smoothing the control signal (S¿OUT?) of the interpolator (24) for the early sample (e), enabling the update operation of the control signal only when the absolute value (|ξ(n)|) of the error signal at a time instant n is smaller than the absolute value (|ξ(n-1)|) of the same error signal at a time instant n-1.
摘要翻译：一种用于在数字通信接收机中保持输入扩频信号与本地生成代码之间的精确对准的装置，包括： - 延迟线（56），用于存储多个连续样本（E-1，E，M，L，L +1）的入射扩频信号; - 三个数字控制内插器（24,26,28），用于通过内插的早期采样（e），内插中间样本（m）和插值后期样本（1）来确定连续采样之间的内插; - 用于计算误差信号（xi）的两个相关器（30,32）作为从内插的早期（e）和晚期（1）样本计算的符号的能量之间的差; - 用于产生用于控制用于早期采样（e）的数字控制内插器（24）的内插相位的控制信号（S _ OUT <）的电路，以及 - 数字非线性滤波器（68），用于平滑用于早期采样（e）的内插器（24）的控制信号（S _OUT？），使得只有当误差信号的绝对值（|| xi（n）||）时刻n小于在时刻n-1的相同误差信号的绝对值（|| xi（n-1）||）。

6. 发明申请

WO2003017084A3 MULTIPLIER CIRCUIT 审中-公开
公开(公告)号：WO2003017084A3
公开(公告)日：2003-02-27
申请号：PCT/IT2002/000540
申请日：2002-08-14
申请人： TELECOM ITALIA S.P.A. , ETTORRE, Donato , MELIS, Bruno , RUSCITTO, Alfredo
发明人： ETTORRE, Donato , MELIS, Bruno , RUSCITTO, Alfredo
IPC分类号： G06F7/52
摘要： An iterative multiplier circuit (10) comprises modules (15 to 18) that subdivide the respective input signals (Z n , J n ) into a first part (msb(Z n ), msb(J n )) that is the power of 2 immediately lower or equal to the input signal and a second part (Z n -msb(Z n ), J n - msb(J n )) corresponding to the difference between the input signal and the aforesaid first part. A shift module (19) generates a respective output signal through shift operations that implement the multiplication operation for numbers that are powers of 2. The circuit operates according to a general iterative scheme in which at each step three components of the output signal (X.Y) are computed, corresponding to the product of two numbers that are powers of 2 and to two products in which at least one of the factors is a power of 2. The number of steps in the iteration scheme is controllable, thus allowing to vary the accuracy with which the output value (X.Y) is calculated.

7. 发明申请

WO2009080057A1 METHOD AND SYSTEM FOR SWITCHED BEAM ANTENNA COMMUNICATIONS 审中-公开
标题翻译：用于开关光束天线通信的方法和系统
公开(公告)号：WO2009080057A1
公开(公告)日：2009-07-02
申请号：PCT/EP2007/011140
申请日：2007-12-19
申请人： TELECOM ITALIA S.P.A. , PIRELLI & C. S.P.A. , BOLLEA, Loris , D'AMICO, Valeria , FODRINI, Maurizio , GALLO, Paolo , MELIS, Bruno , RUSCITTO, Alfredo
发明人： BOLLEA, Loris , D'AMICO, Valeria , FODRINI, Maurizio , GALLO, Paolo , MELIS, Bruno , RUSCITTO, Alfredo
IPC分类号： H01Q3/36 , H01Q21/20
CPC分类号： H01Q3/2605 , H01Q1/2258
摘要： A system for processing an RF signal received via a plurality of antenna elements includes a connection arrangement (6) for selecting a sub-set of a given number of RF signals ( r i , r j ) received from the antenna elements as well as a processing arrangement (8) for combining the received RF signals of the selected subset ( r i , r j ) into a single RF signal for demodulation. The system includes a RF phasing circuit (18) for producing selective combinations of the received RF signals ( r i , r j ) by applying relative RF phase shift weights to the RF signals ( r i , r j ) that are combined; each combination includes RF signals received from a number of adjacent antenna elements equal to the number of the RF signals in the sub-set to be selected. A radio performance estimator (14) generates for each said selective combination of RF signals at least one non-RF radio performance indicator (RPI) representative of the quality of the RF signals in the combination. A decision block (16) identifies the sub-set of received RF signals ( r i , r j ) to be selected as a function of the one radio performance indicator (RPI) generated for the selective combinations of said received RF signals ( r i , r j ). This arrangement facilitates the selection of the signals/antennas to be used for reception e.g. in a WLAN device by avoiding that the selection process may involve all the possible combinations.
摘要翻译：用于处理经由多个天线元件接收的RF信号的系统包括用于选择从天线元件接收的给定数量的RF信号（ri，rj）的子集的连接装置（6）以及处理装置（8），用于将所选择的子集（ri，rj）的接收的RF信号组合成单个RF信号以进行解调。该系统包括RF相位电路（18），用于通过对组合的RF信号（r i，r j）施加相对RF相移权重来产生所接收的RF信号（r i，r j）的选择性组合; 每个组合包括从等于要选择的子集中的RF信号的数量的多个相邻天线元件接收的RF信号。无线电性能估计器（14）针对RF信号的每个所述选择性组合生成表示组合中的RF信号的质量的至少一个非RF无线电性能指示符（RPI）。决定块（16）识别作为根据所接收的RF信号（ri，rj）的选择性组合产生的一个无线电性能指示符（RPI）的函数来选择的接收RF信号（ri，rj）的子集，。这种布置有助于选择要用于接收的信号/天线，例如。在WLAN设备中通过避免选择过程可能涉及所有可能的组合。

8. 发明申请

WO2009068051A1 TUNABLE RIDGE WAVEGUIDE DELAY LINE 审中-公开
公开(公告)号：WO2009068051A1
公开(公告)日：2009-06-04
申请号：PCT/EP2007/010318
申请日：2007-11-28
申请人： PIRELLI & C. S.P.A. , TELECOM ITALIA S.P.A. , BOFFA, Vincenzo , GRASSANO, Giuseppe , GATTI, Fabrizio , ACCATTINO, Luciano , BERTIN, Giorgio , RUSCITTO, Alfredo , SEMENZATO, Paolo
发明人： BOFFA, Vincenzo , GRASSANO, Giuseppe , GATTI, Fabrizio , ACCATTINO, Luciano , BERTIN, Giorgio , RUSCITTO, Alfredo , SEMENZATO, Paolo
IPC分类号： H01P1/18 , H01P9/00
CPC分类号： H01P9/00 , H01P1/182
摘要： A tunable delay line (100) for radiofrequency or microwave frequency applications consists of at least one ridge waveguide in which the ridge (103) is movable in the waveguide body (102) so as to vary the width of an air gap (105) defined between the longitudinal end surface of the ridge (103) and a confronting member (104) of the waveguide. The ridge (103) is moved by an actuator external to the waveguide body (102).
摘要翻译：用于射频或微波频率应用的可调延迟线（100）包括至少一个脊波导，其中脊（103）可在波导体（102）中移动，以便改变限定的气隙（105）的宽度在脊（103）的纵向端表面和波导的面对构件（104）之间。脊（103）由波导体（102）外部的致动器移动。

9. 发明申请

WO2007124761A1 FREQUENCY DOMAIN CHANNEL ESTIMATION IN A SINGLE CARRIER FREQUENCY DIVISION MULTIPLE ACCESS SYSTEM 审中-公开
标题翻译：单载波频分多址接入系统中的频域信道估计
公开(公告)号：WO2007124761A1
公开(公告)日：2007-11-08
申请号：PCT/EP2006/003916
申请日：2006-04-27
申请人： TELECOM ITALIA S.P.A. , MELIS, Bruno , RUSCITTO, Alfredo , DI PAOLA, Pietro
发明人： MELIS, Bruno , RUSCITTO, Alfredo , DI PAOLA, Pietro
IPC分类号： H04L25/02 , H04L27/26
CPC分类号： H04L25/022 , H04L25/0206 , H04L25/0226 , H04L25/0228 , H04L25/0258 , H04L25/03159 , H04L25/03292 , H04L25/03305 , H04L27/2613 , H04L27/262 , H04L2025/03414
摘要： A channel estimator (202) for use in a receiver node receiving signals (x(1), x(2),.... x(Nu)) from a plurality of user terminals wherein each user terminal is allotted a respective set of transmission subcarriers and respective test signal sequences (rp) for transmission over the channel to be estimated. The channel estimator (202) has stored therein (400) information as to the respective sets of transmission subcarriers allotted to the user terminals (TUi, TU2,..., TIW for transmission as well as the discrete spectra of the respective test signal sequences allotted to the user terminals. Upon receiving from a plurality of user terminals signals including the respective test signal sequences (rp) transmitted over the channel by using the respective sets of transmission subcarriers allotted thereto, the estimator generates (208) the discrete spectrum of the combined test signal received and performs channel estimation as a function of the discrete spectrum of the combined test signal and the discrete spectra of the test signal sequences allotted to the user terminals (TU1, TU2 TUNu). A frequency domain channel estimation is performed for a Single Carrier Frequency Division Multiple Access (SC-FDMA) system.
摘要翻译：一种在多个用户终端中接收信号（x（1），x（2），... x（Nu））的接收机节点中使用的信道估计器（202），其中每个用户终端被分配相应的一组传输子载波和各个测试信号序列（rp），用于在待估计的信道上进行传输。信道估计器（202）已经存储了关于分配给用户终端（TUi，TU2，...，TIW以用于传输）的各个发送子载波的各组的信息（400）以及各个测试信号序列的离散频谱分配给用户终端，当从多个用户终端接收包括通过使用分配给其的各组发送子载波通过信道发送的各个测试信号序列（rp）的信号时，估计器产生（208）离散频谱组合测试信号被接收并且根据分配给用户终端（TU1，TU2 TUNu）的测试信号序列的离散频谱和组合测试信号的离散频谱的函数进行信道估计。对于一个频域信道估计单载波频分多址（SC-FDMA）系统。

10. 发明申请

WO2007038969A1 METHOD AND SYSTEM FOR MULTIPLE ANTENNA COMMUNICATIONS, RELATED APPARATUS AND CORRESPONDING COMPUTER PROGRAM PRODUCT 审中-公开
标题翻译：多天线通信方法与系统，相关设备及相关计算机程序产品
公开(公告)号：WO2007038969A1
公开(公告)日：2007-04-12
申请号：PCT/EP2005/010799
申请日：2005-10-05
申请人： TELECOM ITALIA S.P.A , PIRELLI & C.S.P.A. , MELIS, Bruno , RUSCITTO, Alfredo , SEMENZATO, Paolo , MELE, Renata , GRASSANO, Giuseppe
发明人： MELIS, Bruno , RUSCITTO, Alfredo , SEMENZATO, Paolo , MELE, Renata , GRASSANO, Giuseppe
IPC分类号： H04B7/06 , H04B7/08
CPC分类号： H04B7/0671 , H04B7/04 , H04B7/0837 , H04B7/0894
摘要： A system for diversity processing two signals (INPUT 1 , INPUT 2 ) transmitted and/or received via two diversity antennas (1, 2) includes at least four respective propagation paths coupling the signals to the two diversity antennas (1, 2). Diversity processing is primarily in the form of decorrelation achieved by means of time variable delay elements (161 to 164; 261 to 264; 1261 to 1264) that apply time variable delays to the signals propagating over at least two of the propagation paths in the system. The related processing may take place either at RF or IF, or at baseband, whereby the time variable delays are applied by subjecting the baseband signals to multiplication by a complex signal.
摘要翻译：用于分集处理经由两个分集天线（1,2）发送和/或接收的两个信号（INPUT 1，INPUT 2 ）的系统包括至少四个相应的传播路径耦合到两个分集天线（1,2）的信号。分集处理主要是通过时间可变延迟元件（161至164; 261至264; 1261至1264）实现的去相关的形式，其对通过系统中的至少两个传播路径传播的信号施加时间可变延迟。相关处理可以在RF或IF或基带处进行，由此通过使基带信号乘以复数信号来应用时间可变延迟。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式